Comment 0 for bug 680811

The maximise behaviour of windows in a twinview setup changes with xserver packages version 1.9.0-0ubuntu7.1. After upgrade panels (gnome) span all screens and windows (metacity) maximise across all available screens. Previously objects would only maximise within their current screen. Downgrade and lock to the old version (1.9.0-0ubuntu7) of the x-server restores the expected behaviour.